baber/WOPTO huggingface dataset:
Patent GB-1176708-A (GB)
Title: Lens Arrangement for Corpuscular Ray Apparatus.
IPC: H01J37/141
Filed: 1967-05-30
Abstract: 1,176,708. Electron and ion microscopes; superconductor lenses. SIEMENS A.G. 30 May, 1967 [21 Sept., 1966], No. 24825/67. Headings H1D, H1K and H1P. An iron-free superconducting magnetic lens comprises two superconducting screening cylinders 2, 3 spaced apart to delimit a lens gap S free of superconducting material and surrounded by the lens coil 1. The opposing end faces 6, 7 of the cylinders 2, 3 may be flat or bevelled, as shown, to follow the field lines. The bevelling may have two bevels of varying angle or the end faces may be rounded or both bevelled and rounded. The lens bore may be reduced in the vicinity of the end faces. The end faces may be differently shaped so that the field in the gap is rendered unsymmetrical. The screening cylinders may be associated with further screening elements including an annular screen surrounding the lens coil. The lens coil may be subdivided so that a coil surrounds each screening cylinder and supplementary coils may be arranged in the lens gap for field shaping, reduction of hysteresis or adjustment of focal length. The screening cylinders may comprise sintered Nb 3 Sn, porous sintered material, or elements, e.g. discs, of Nb, Pt or steel sheathed with Nb 3 Sn. Each cylinder may be built up from alternate superconducting and non- superconducting parts. The lens may be used in electron or ion microscopes or in electron diffraction apparatus and a specimen, a diaphragm or a stigmator may be introduced into the lens gap.
Patent GB-797093-A (GB)
Title: Electrolytic production of metal alkyls
Inventor: ROETHELI BRUNO EMIL
IPC: C25B3/13
Filed: 1955-08-30
Abstract: 797,093. Electrolytic preparation of metal alkyls. ESSO RESEARCH & ENGINEERING CO. June 25, 1956 [Aug. 30, 1955], No. 24828/55 Class 41. An alkyl derivative of a first metal in Groups IA, IIA, III or IVB (including boron and silicon) is produced by electrolyzing, while excluding water vapour and oxidizing gases as by providing an atmosphere of dry nitrogen, argon, or hydrogen, an electrolyte comprising an alkyl derivative of a second metal of the said Groups in liquid phase, using the first metal as anode, allowing the second metal to deposit at the cathode, and collecting the alkyl derivative of the first metal produced at the anode. The electrolyte may also contain a minor proportion of an alkali metal halide or an alkaline earth halide, an alkyl halogen-derivative of the second metal or an alkyl halide with or without the same halogen compound (halide) of a Group III or IV metal. Preferably an applied voltage of not more than 1.5 volts is used, the anode current density is greater than the cathode current density and the temperature is maintained from 2 to 10 F. above the freezing point of the electrolyte, but not above 250 F. The electrolyte is agitated by means of ultrasonics and is circulated to ensure movement from anode to cathode. The electrolyzing current may be unidirectional with an A.C. ripple.
Patent GB-762871-A (GB)
Title: Improvements in or relating to the manufacture of insulin preparations
Inventor: OVERELL BRIAN GEORGE
IPC: C07K14/62
Filed: 1953-09-08
Abstract: A prolonged-acting aqueous insulin solution is prepared by mixing an aqueous solution of insulin, e.g. crystalline insulin, and an aqueous solution of a synthetic basic polypeptide having a chain of at least eight amino acid units linked together by peptide linkages, the solution being adjusted to a pH of between 2 to 4, prior to or after the mixing.  The solution may contain at least 0.075 per cent by weight of zinc based on the weight of insulin, together with phenol, cresol, sodium chloride, glycerol and buffer substances, e.g. phosphates.  The polypeptide, which may be in the form of the hydrochloride, may comprise polylysine, or a copolymer of lysine with phenylalanine, or leucine; polyornithine, or a copolymer of ornithine with lysine, valine, valine phenylalanine, leucine, isoleucine or glycine, and may be present between two and three times the isophane value.  The Specification includes a description of the synthesis of poly-l-lysine, poly-l-lysine: l-laucine, poly-l-lysine: l-phenylalanine, and refers to poly-l-lysine polymers with dl-leucine, dl-isoleucine, dl-valine, dl-phenylalanine, and glycine, and poly-dl-ornithine: l-leucine.  Specification 744,988 is referred to.
Patent GB-858213-A (GB)
Title: Improvements in or relating to alternating electric current supply systems
Inventor: BOWYER ARTHUR WILLIAM
IPC: H02H3/38
Filed: 1956-08-14
Abstract: 858,213. Protective arrangements. GENERAL ELECTRIC CO. Ltd. Oct. 8, 1957 [Aug. 14, 1956], No. 24874/56. Class 38 (5). In a protective arrangement, e.g. for an A.C. traction supply system in which fault current and load current may be of the same order, the operation of a low-set overcurrent relay 16 is only permitted when the phase angle between the supply current and voltage exceeds the value for which a phase-responsive element 12 has been set, the value of the phase angle discriminating between fault current and load current. In Fig. 1 the winding of the relay 16, the winding of a high set overcurrent relay 10 and the current winding 20 of the element 12 are connected in series and fed from a current transformer 9. The voltage winding 19 of the element 12 is supplied from a voltage transformer 14 through a variable resistance 21 which enables the phase angle setting of the element to be varied. The low set overcurrent relay may also be provided with a directional control element, Fig. 4 (not shown).
Patent GB-1069674-A (GB)
Title: Electromagnetic operator
IPC: H01H50/20
Filed: 1964-06-16
Abstract: 1,069,674. Electromagnets. HI-G Inc. June 16, 1964 [Sept. 24, 1963], No. 24895/64. Heading H1P. [Also in Divisions E2 and H2] On energization of coil 104 a first armature 132 is attracted against the action of a weak spring 140 and strikes a second armature 134 which is restrained by a strong spring 90. The second armature 134 thus moves under the combined action of the magnetic attraction and the momentum of the first armature 132. The core 100 of the coil is enlarged to engage' both armatures in their energized position. The magnetic circuit is completed through a shell 98 surrounding the coil and an end plate 107. A sleeve secured to armature 134 carries three balls which are normally jammed between a rod 76 and the tapered recess of a bushing 80 to latch the rod in position. On energization the sleeve is moved to the right by armature 134, releasing rod 76 which is urged to the left by spring 45 to actuate a plurality of bridging contacts carried by a rectilinearly slidable support 40. The support 40 is reset by means of a tool introduced through an aperture 16 in the switch casing.
Patent GB-1088881-A (GB)
Title: Improvements in or relating to television circuits
Inventor: MUMFORD HOWARD
IPC: H04N5/12
Filed: 1964-06-17
Abstract: 1,088,881. Television; transistor pulse circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. June 15, 1965 [June 17, 1964], No. 25142/64. Headings H3T and H4F. In a television scanning system the vertical scanning generator connected via lead V is controlled by a blocking oscillator VT1, which is triggered by the mains supply M, whilst the horizontal scanning H is controlled by a wholly independent oscillator VT3. In order to produce interlaced scanning, a second blocking oscillator VT2 with a longer time-constant is triggered to operate at half the vertical scanning frequency and the collector pulses from both the first and second blocking oscillators are combined in network R4, R5 and applied to interrupt the operation of oscillator VT3 for periods representing the vertical flyback period. The arrangement is such that the duration of the pulses from VT2 exceeds those from VT1 by one-half of a line period whereby alternate interruptions of VT3 differ by a corresponding amount and interlaced scanning results.
Patent GB-1126083-A (GB)
Title: Improvements relating to vacuum switches
Inventor: ALLEN PETER GEORGE WILLIAM
IPC: H01H33/662
Filed: 1966-06-07
Abstract: 1,126,083. Vacuum switches. A. REYROLLE & CO. Ltd. 24 Aug., 1967 [7 June, 1966], No. 25263/66. Heading H1N. The metal condensation shield 11 inside the evacuated envelope 13 of a vacuum switch is corrugated longitudinally, 12, to increase its surface area. The shield may be a cylinder as shown, with parallel corrugations or may be barrel-shaped or alternatively it may be a solid body having a barrel-shaped corrugated internal surface. A further disc-shaped shield 21 protects a bellows seal 19.
Patent GB-290889-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D1/143
Filed: 1927-09-26
Abstract: 290,889. Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen, and Berkel, C. F. M. van. Sept. 26, 1927. Cutting slices in succession. - In a slicing machine having a knife 3 rotatable about a stationary axis, the table 15 carrying the substance to be sliced is capable of being either rotated or oscillated past the knife. The table is centred on a pin 16 upstanding from a carrier 13 which is pivoted about a shaft 10 passing upwards through a stationary base 1. Wheels 14 on the carrier run on the base 1. The shaft 10 and a shaft 6 which drives the knife through chain gearing 11 are driven from a hand-actuated shaft 5 by bevel gearing 7, 8, 9. A pinion 18 splined on the shaft 10 is adapted to mesh either with the internallytoothed rim 15<1> of the table or with a wheel 19 carried by a shaft 20 journaled in the carrier 13 and carrying at its lower end a crank 21 connected by a rod 23 to a pin 24 on the base 1. A lever 25 pivoted at 26 to the carrier 13 has at its end a projection 27 engaging a groove 28 in the pinion 18. When the handle 29 of the lever is depressed the pinion 18 is raised into mesh with the toothed rim 15<1> and the handle engages between lugs 30 on the base 1 so as to hold the carrier 13 stationary. Rotation of shaft 5 then causes rotation of table 15 about the axis of the pin 16. But if the handle 29 is raised, the pinion 18 is moved into mesh with the wheel 19 and the lever engages any desired one of a series of notches 31 in the rim 15<1> so as to lock the table to the carrier. Rotation of shaft 5 then causes oscillation of table 15 about the axis of the shaft 10. The number of notches 31 corresponds to the number of independent clamping devices 17 mounted on the table. The arrangement may be modified so that both the rotation and oscillation of the table are about the axis of the pin 16.
Patent GB-463856-A (GB)
Title: Improvements in automatic centrifugal clutches, or brakes
IPC: F16D43/18
Filed: 1936-09-18
Abstract: 463,856. Centrifugally - operated brakes. ANDERTON, A. Sept. 18, 1936, No. 25384. [Class 103 (i)] [Also in Group XXIV] In a centrifugal brake comprising shoes f guided for radial movement on a driving-boss a, the sides of the shoes are formed with wedge-shaped recesses engaged by wedge-shaped flanges g formed on collars c and e, the collar c being integral with the boss a while the collar e is urged towards the collar c by spring-loaded bolts d passing through lugs i on the boss. The shoes are thus prevented from moving into contact with the drum k until a critical speed, determined by the adjustment of the springs, is reached.
Patent GB-828720-A (GB)
Title: Improvements in and relating to the manufacture of translucent electrically-conducting layers
Inventor: MASH DEREK HUBERT
IPC: H05B33/28
Filed: 1956-08-20
Abstract: A translucent electrically-conducting layer is formed on a base by applying to the surface of the base a thin layer of small glass beads ("ballotini") and subsequently applying an electrically conducting material to form a conducting network around the beads.  The beads may have a diameter from 0.05 to 0.5 mm., and suitable conducting materials are silver or graphite which may be applied in powder form or dispersed in a liquid as a paint.  An initial coating of an adhesive, e.g. an alkyd resin, and a final coat of a transparent plastic such as an alkyd-melamine mixture may be applied.  The layer of the invention may be applied to an opaque conducting surface to form an electroluminescent lamp, or to a transparent conducting surface to form a light amplifier, by the use of electro-luminescent and/or photo-conductive materials. Suitable transparent bases are polymethylmethacrylate and polystyrene.
Patent GB-756118-A (GB)
Title: A branching clamp for electrical conductors
IPC: H01R4/36
Filed: 1954-09-02
Abstract: 756,118. Cable couplings. BACH, C. G. Sept. 2, 1954 [Sept. 4, 1953], No. 25528/54. Class 38 (1). A branching clamp comprises a pair of U- shaped members 1, 2, Fig. 1, which interfit when pushed together as shown in Fig. 4 to form a rectangular passage for conductors 8, 9. The walls 4, 4a of the members have brackets 10, 10a integral therewith and carrying clamping screws 11, 11a which engage the outer faces of the bottom portions 3a, 3 respectively of the members and when tightened clamp the conductors against said bottom portions. One of the brackets and.its clamping screw may be omitted.
Patent GB-318153-A (GB)
Title: Machine for repairing runs in fabrics
IPC: D04B17/04
Filed: 1929-08-22
Abstract: 318,153. Dyke, W. D. van. Aug. 28, 1928, [Convention date]. Grant of Patent refused. Darning.-The usual latch needle for mending ladders in silk ware is operated mechanically by a device which ceases to be effective if the pull on the thread approaches its breaking point. The hook-needle b with its latch c is held in a chuck c at the end of a rod f reciprocated by a flexible wire g attached to the wheel b. The wheel k is rotated by a conical friction drive m held up to its work by a light spring n. The drive m is rotated from the motor M by a worm r, cogwheel p, and shaft o. If the operator moves the needle so that in pulling up the loops the breaking strain of the thread is approached, the resistance of the thread causes the drive m to slip inoperatively over the periphery of the wheel k. To stop the reciprocation of the needle, it is sufficient for the operator to place a restraining finger on the chuck. Reference has been directed by the Comptroller to Specification 305,193.
Patent GB-338949-A (GB)
Title: Improvements in or relating to leather working machines
IPC: C14B1/46
Filed: 1929-08-23
Abstract: 338,949. Turner Tanning Machinery Co., Ltd., and Schettler, G. A. Aug. 23, 1929. Centrifugal fans.-A leather buffing or fluffing machine is constructed with a hollow frame having communicating compartments both open to the atmosphere and adapted to receive respectively an operating wheel disc and a fan arranged to create two independent air currents one of which draws away dust directly from the operative portion of the wheel while the other carries away dust tending to spread beyond the wheel. The machine casing in which the wheel 12 rotates comprises an upper hood-section 2 hinged to a lower section having compartments 3, 4 divided by a partition 5. The compartment 4 contains a fan having blades 32 projecting on either face of a disc 31 which is a running fit in an opening in a plate 35 which divides the fan casing 36, 37 and is extended by a web 43 to divide the chamber 4 into two parts. The fan draws in air axially on either side and discharges the two streams circumferentially through a common outlet 39. The upper section 2 is divided into two portions 7, 8 by the web 6, the portion 7 enclosing the wheel and communicating with the compartment 3, the portion 8, including a hood 52, communicating with the compartment 4. The fan draws air on the one side direct from the compartment 4 and on the other through on aperture 18 in the partition 5 from the compartment 3.
Patent GB-1327336-A (GB)
Title: Miticidal compositions
IPC: C07F7/22
Filed: 1971-04-19
Abstract: 1327336 Pesticidal application of organotin compounds SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 19 April 1971 [2 April 1970 8 Feb 1971] 25737/71 Heading A5E Miticidal compositions and methods have as active ingredient an organo-tin compound of formula: wherein R is alkyl, R' is H or alkyl, R" is alkyl, m is from 0 to 2, n is 1 or 2 and X is an electro-negative group, e.g. halogen, OH, R.CO.-O or -O-.
Patent GB-1526865-A (GB)
Title: Emulsion containing magnetic particles
IPC: G09F9/37
Filed: 1976-06-22
Abstract: 1526865 Ferrofluids INTERNATIONAL BUSINESS MACHINES CORP 22 June 76 [30 June 1975] 25781/76 Heading B1V [Also in Divisions Cl, C4 and C5] An emulsion having continuous and discontinuous phases comprises (a) water and (b) a water-immiscible organic top liquid phase comprising a liquid non-polar aliphatic and/or aromatic hydrocarbon and a liquid halogenated hydrocarbon in such proportions that the density of the phases (a) and (b) are substantially equal, either (a) or (b) containing a surface active agent and having colloidal ferromagnetic particles suspended thereon, the non-polar and halogenated hydrocarbons being mutually soluble and compatible with the surface-active agent. The emulsion may be of the type oilon-water or water-on-oil. The specified ferromagnetic material is Fe 3 O 4  (magnetite). The preferred surface-active agent is oleic acid.
Patent GB-301995-A (GB)
Title: Improvements in anti-dazzle screens, sun shade and similar screens for motor road vehicles
IPC: B60J3/00
Filed: 1927-09-30
Abstract: 301,995. Vincent, W. J., and Vincent, H. E. R. Sept. 30, 1927. Anti-dazzle screens. -Relates to adjustable screens of coloured glass or similar material which are mounted in front of a vehicle windscreen for protecting the driver's eyes from dazzle, or for preventing obscuration of the upper part of the windscreen by rain, snow, &c., means being provided whereby the position of the screen may be adjusted from the interior of the vehicle. According to the invention the adjusting mechanism is adapted, when elevating the screen, to retract or withdraw it rearwardly to some extent to bring it to a position over the upper edge of the windscreen in which it is protected by the peak of the car roof. In the construction shown the adjustable, screen a is pivotally supported by means of a pair of arms h keyed to a rotatable shaft c located behind and below the upper edge of the windscreen b, the arms h having portions which project radially from the shaft, c and merge into arcuate, portions attached to the screen a. A channel-shaped draught-excluding strip j accommodating the rear edge of the screen a in its raised position extends between the upper edge of the windscreen and the car roof i. In a modification the screen a is provided on its side edges with studs projecting into guide slots in plates attached to the side frame members of the windscreen, the slots being horizontal at one part and extending into downwardly and forwardly curved portions. Adjustment of the screen is effected by means of nuts working on rotatable screwed spindles and connected by links to lugs on the screen.
Patent GB-534741-A (GB)
Title: Improved tone arm for gramophones
IPC: G11B3/00
Filed: 1939-09-14
Abstract: 534,741. Gramophones. FABBRICA ITALIANA MAGNETI MARELLI. Sept. 14, 1939; No. 25862. Convention date, Sept. 16, 1938. [Class 40(ii)] A symmetrical pick-up arm 9, Fig. 1, is mounted on a horizontal pivot 8 carried at the head of a vertical pillar Fig. 3 (not shown), rigid with a horizontal supporting arm 1. This arm 1 is rotatable about a vertical axis 2 and extends transversely to the length of the pick-up arm 9, so that the longitudinal axis of the tone arm does not intersect the vertical axis 2 of the arm 1.
Patent GB-469217-A (GB)
Title: Improvements in reflectors for use on typewriters or like machines
IPC: B41J29/18
Filed: 1936-09-24
Abstract: 469,217. Typewriters &c. FORD, F. R. Sept. 24, 1936, No. 25903. [Class 100 (iv)] A reflector for illuminating the printing line of a typewriter or like machine consists of a polished metal strip 9 having trunnions 11 mounted in bearings 13 and so arranged that the reflector is balanced in any position to which it is adjusted. The trunnions may consist of flat lugs on the strip and may be provided with knobs. Friction-washers 17 may be mounted on the trunnions. The strip may be provided with a cover or lens of plain or coloured glass, and may be recessed to clear parts of the typewriter.
Patent GB-1278052-A (GB)
Title: Semiconductor devices and methods of making them
Inventor: HATCHER ARTHUR LEE JR
IPC: H01L29/00
Filed: 1969-05-21
Abstract: 1278052 Semi-conductor devices WESTERN ELECTRIC CO Inc 21 May 1969 [21 May 1968] 25938/69 Heading H1K The impurity concentration profile near the surface of a semi-conductor wafer is adjusted by heating the wafer in an oxidizing atmosphere under such conditions that the rate of increase in thickness of the oxide is greater than the rate of diffusion of an impurity. Impurities which have a greater affinity for the semi-conductor than for the oxide are concentrated in the semiconductor near the oxide-semi-conductor interface by this process forming an enhanced impurity concentration layer, while impurities which have a greater affinity for the oxide than for the semi-conductor are absorbed into the oxide forming a depleted impurity concentration layer. A plurality of Zener diodes are produced by forming an oxide layer (12) on the surface of an N-type Si slice (11) heavily doped with Sb, photomasking and etching to form a plurality of apertures (13) in the oxide, predepositing and driving-in B to form a heavily doped P-type region (14) and removing the glassy layers formed in the apertures. The wafer is then heated in a wet oxidizing atmosphere to redistribute the impurities. The Sb atoms are pushed ahead of the advancing oxide layer to form a layer 16 of enhanced conductivity at the surface of the N- type region. The B atoms are absorbed into the oxide layer to form a layer 17 of depleted conductivity at the surface of the P-type regions. This redistribution of impurities results in a decrease in the reverse breakdown (Zener) voltage while maintaining a hard breakdown characteristic. A window is opened in the oxide layer (15) formed in each of the original windows and contacts 18 are deposited on the P-type regions 14, a layer of Ag is applied to the lower face of the slice 11 which is then scribed and broken into individual diode wafers. If it is found that the breakdown voltage has been reduced too far the slice may be heated at a higher temperature (1250‹ C.) which results in the mobility of the impurities being greatly increased to a value greater than the rate of oxidation of the semi-conductor so that the impurity concentration and the breakdown voltage return to their original values. The wafer may then be re-processed to reduce the breakdown voltage to the desired value. It is stated that Al segregates into the oxide, Ga, In, As, P and Sb segregate into the semiconductor and B may do either or remain unaffected depending upon the conditions.
Patent GB-190699-A (GB)
IPC: H04B1/56
Filed: 1922-09-26
Abstract: 190,699. Ges. f³r Drahtlose Telegraphie. Dec. 20, 1921, [Convention date]. Thermionic amplifiers, oscillation-generators and modulating systems; diplex signalling.-In order to permit of transmission and reception on the same carrier wave length in a high-frequency telephony system, the thermionic generator of the carrier wave is interrupted at super-audible frequency. During the periods of self-oscillation, the tube is used for transmission, whilst it acts as a receiver during the intervals of interruption or non-oscillation. In a two-grid generator, the space-charge grid 8 is connected to an ohmic resistance 9 in the anode circuit of a second valve 10 energized by an oscillator 12, so that an alternating potential is imposed upon the grid 8. During periods of high potential, carrier-wave oscillations are created in the anode circuit 2, 3 and may be modulated by a microphone 6. When the charge on the grid 8 is relatively negative, the tube 4 does not generate, but acts as a receiver of incoming signals from the circuit 1. Any form of thermionic generator may be used in place of the two-grid form shown.